[quote name='Donnelly']What's the exclusive DLC like? I already owned (and loved Bioshock) and could be tempted to buy another copy if the DLC's any good.[/quote]
I think (although I'm not sure) the PS3 version got challenge rooms where they must complete certain objectives before the time limit runs out. It's a shame they didn't release it as DLC for Xbox, I would've bought it. I've seen YouTube videos of them and they look pretty cool.